import React, {Component} from 'react'
import PropTypes from 'prop-types'
import CommentItem from '../comment-item/comment-item'

import './commentList.css'

export default class CommentList extends Component {

    //给组建类添加属性
    static propTypes = {
        comments: PropTypes.array.isRequired,
        deleteComment: PropTypes.func.isRequired
    };

    render() {
        const {comments, deleteComment} = this.props;
        const display = comments.length === 0 ? 'block' : 'none';
        return (
            <div className="col-md-8">
                <h3 className="reply">评论回复：</h3>
                <h2 style={{display}}>暂无评论，点击左侧添加评论！！！</h2>
                <ul className="list-group">
                    {
                        comments.map((c, index) =>
                            <CommentItem comment={c} key={index} deleteComment={deleteComment} index={index}/>)
                    }
                </ul>
            </div>
        )
    }
}

